Hiʻiaka

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Hiʻiaka
Hiʻiaka is the larger, outer moon of the dwarf planet Haumea. Its measured brightness is 5.9±0.5%, translating into a diameter of about 22% of its primary, or in the range of 320 km, assuming similar albedo. The near infrared spectrum of Hiʻiaka is dominated by water-ice absorption bands, which means that its surface is made mainly of water ice. Hiʻiaka (moon) - Wikipedia, the free encyclopedia
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Additional Information

Short Description Hiʻiaka is the larger, outer moon of the dwarf planet Haumea. Its measured brightness is 5.9±0.5%, translating into a diameter of about 22% of its primary, or in the range of 320 km, assuming similar albedo. The near infrared spectrum of Hiʻiaka is dominated by water-ice absorption bands, which means that its surface is made mainly of water ice. Hiʻiaka (moon) - Wikipedia, the free encyclopedia
Discovered by Michael E. Brown, Chad Trujillo, David Rabinowitz
Discovery date 26 January 2005
Type Moon
AddInfo Haumea I
Satellite of Haumea
Orbit Prograde
Rotation Direct
Apoapsis 05 52 439 km
Periapsis 05 47 321 km
Semi-major axis 05 49 880 km
Distance from Sun 02 43.218 au /2
Eccentricity 0.051 3
Orbital period 49.12 days
Orbital speed 02 13.6 km/s
Inclination to the equator 126.356°
Diameter/Size 03 320 km
Mass 1019×1.79 kg | 0.45% of Haumea
Density 01 1 g/cm3
Surface gravity  0 m/s2
Escape velocity  0 m/s
Albedo geometric 0.80
Temperature mean 02 32 ± 3 K
Apparent magnitude 17.3
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